Pretty easy, but you may want to test each strip by peeling up just a little bit to check the paint. Obviously the older the car, the higher the chance that the paint underneath will be a different color. Some people have clearcoat issues with the strips.
Try using the
search function for "door ding" and you'll find tons of info.
Wait for a really hot day.
Use heavy fishing line and gloves.
"Saw" the fishing line back and forth under the strip.
For mine, after I got a little bit up, I was able to just pull it off.
Wrap an old t-shirt around your thumb and rub off the adhesive.
Goo-Gone or Meguiar's Cleaner Wax helps any left over gunk.
Wash and wax.
Enjoy.
Took me a total of 15 minutes.
Good luck!
